states senator. that also has been -- a subject of investigation by the fbi. and for more information about these matters, i will refer you to the fbi. the president, i'm sure you'll ask, mr. president has been of course briefed on these letters. he was briefed last night and again this morning. secondly, there is obviously a lot of interest in the explosions in boston. and i wanted to make clear as you heard from the president yesterday that our hearts and prayers go out to the victims and to their families who are injured, those who were injured and killed in this heinous and cowardly act. the full weight of the federal government is behind this investigation which is being led by the fbi. and as the president said, we will find out who did this, we will find out why and we will bring those responsible to justice. with that said, it is very important that we allow this investigation to run its full course. and to ensure that we retain the integrity of that investigation. therefore, on matters relat